Question about Canon Rebel XT / EOS 350D Digital Camera

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Error 99 in EOS 400D

I have a new Canon EOS 400D. While trying to use the built in flash it is giving me Error 99 stating to replace the battery. I have cleaned the lens contact and the Date-Time CR2016 battery also but did not work. Please advice.

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Here is a link which may help you.
http://forums.dpreview.com/forums/read.asp?forum=1031&message=9598105

It may be that the contacts on the lens is dirty, follow the directions, by using a clean pencil eraser (I would also suggest to use alcohol and clean the contacts after using the eraser). Also to remove the date button battery and the other batteries, then turn on the camera (with all batteries removed).
Then put the batteries back in.

Posted on Aug 24, 2008

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1 Answer

My name is Madhu. I use the camera Canon EOS 400D / Digital Rebel XTi. When the inbuilt FLASH is on then a message pop up as "busy now", when i tried to click the camera to take a photo then...


Welcome to Fixya
Err 99 could mean several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:
Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.

Thank you

If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

Apr 04, 2011 | Canon Rebel XTi / EOS 400D (body only)...

1 Answer

Canon 400D,Error 99 keeps coming up,have replaced battery pack,even recharged batteries,stillbeing told to"replced battery pack".Help...


Welcome to Fixya
Err 99 could means several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:

Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.

Have a good one!


If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

Feb 06, 2011 | Canon EOS 400D / Rebel XTi Digital Camera...

1 Answer

My Canon 400D camera keeps coming up with error 99 I have cleaned the contacts on both my camera and my Tamron 28-200 lens.At first i thought it was my camera but I tried it with another lens and it...


Hi turn on the camera with the lens on set to tv and a iris of f22 and use the stopdown button if the lens stops down the lens is ok if not the lens is faulty may need a intuper replaced

Jan 11, 2010 | Tamron 28-200mm F3.8-5.6 for EOS

3 Answers

What is error 99


What wide angle lens is it need f number it may be to old to work on eos 400d

Dec 27, 2009 | Canon EOS 400D Digital Camera

2 Answers

Error 99 message keeps popping up


err 99 is moisture or dew inside the camera.

May 31, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

Error 99! Wont' take picture, the message states


Go to the www.canon.com website and find out what Error 99 means. ted10

Apr 18, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Error 99 comes while taking photographs


This could well be a serious issue, which you'd need to send to your manufacturer to fix, however there are a few things you could try first:

Take your lens off and with a clean rubber (like on the end of a pencil), clean the contacts of both the camera and the lens.

Apr 11, 2009 | Canon EOS 400D / Rebel XTi Digital Camera...

1 Answer

My Canon is displaying - Err 99 what should I do?


See if Sigma has any updated advice on this. Otherwise, I don't mean to sound rude or harsh, but unfortunately you may be out of luck with the compatibility...you will need to get a Canon lens. Error 99 is just a communication error and cleaning the contacts is about all you can really do so if that hasn't worked...I'm sure this is not the news you want to hear, but contact Sigma if you haven't already and see what they say.

Take care!

May 30, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Error 99 in canon 400D


You will get that error when using some lenses other than Canon. A lot of the older Sigma lenses have that issue. Do you get this error when using newer Canon EOS lenses?

Apr 01, 2008 | Canon Digital Rebel / EOS-300D Digital...

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